aaah, I figured that must be it. now if I can just figure out how to
get the AT to only spit out 863s for each unique barcode rather than
one for each folder within a barcoded box....... (or alternately,
will pull data from the XML or try to dedup barcodes pre-MarcEdit)
thanks for the clarifications, Terry!
heidi
On Tue, Sep 4, 2012 at 3:14 PM, Reese, Terry
<[log in to unmask]> wrote:
> Yes, I can answer this one...the MARC format has two limitations that will be of interest to you.
> 1) Fields can be no longer than 9,999 bytes. However, because this number includes subfield data and indicators, etc., the actual length of a field is smaller than that. MarcEdit, for validation purposes, when converting from MARCXML, will split fields over 8000 bytes into multiple fields to protect record integrity.
>
> 2) A MARC record itself cannot be larger than 99,999 bytes. This number includes the directory -- which makes up roughly a 1/3 of a records size (includes the field numbers and locations within the binary record so parsers can correctly disassemble the data). When translating from MARCXML, MarcEdit will automatically truncate records that will result in records that violate these record size limitations and will mark the corresponding fixed field element as a record having been truncated.
>
> Since you have a MARCXML record with over 1300 fields -- my guess is that you are running into limitations of record size -- since each directory entry for a field will take up 12 bytes I think, so without any data -- you already are consuming 15,600 bytes without any of the field data present in those fields. Assuming your record is more than just 863 fields :), I'm fairly certain you will have gone over the allowable record size.
>
> --tr
>
> -----Original Message-----
> From: MarcEdit support in technical and instructional matters [mailto:[log in to unmask]] On Behalf Of Heidi P Frank
> Sent: Tuesday, September 04, 2012 11:51 AM
> To: [log in to unmask]
> Subject: [MARCEDIT-L] missing 863 fields after conversion from MARC XML to .mrk
>
> Hi everyone,
> I have a MARC XML record that was exported from the Archivists'
> Toolkit which contains over 1300 863 fields for each of the box/folder instances within the toolkit. However, when I convert this file to .mrc, and then to .mrk in order to view and edit it in MarcEdit, not all of the 863 fields are there.
>
> Is there a limit to the record size or number of fields allowed, or does anyone know why all of the 863 fields are not being included in the record?
>
> any hints much appreciated!!
> heidi
>
> Heidi Frank
> Electronic Resources & Special Formats Cataloger New York University Libraries Knowledge Access & Resources Management Services
> 20 Cooper Square, 3rd Floor
> New York, NY 10003
> 212-998-2499 (office)
> 212-995-4366 (fax)
> [log in to unmask]
> Skype: hfrank71
>
> ________________________________________________________________________
>
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> ________________________________________________________________________
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